Attenuator integrated with modulator and transmitting module for WDM systems using the same
US6785434B2 · kind B2 · utility
37Cited by
5References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2002 |
| Grant date | Aug 31, 2004 |
| Priority date | — |
| Expiry date | Jun 20, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/12142
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical device integrated on a planar substrate is disclosed, comprising a Y-branch attenuator optically coupled to a Mach-Zehnder modulator. The device also comprises means for reducing a crosstalk caused by unguided radiation between the Y-branch attenuator and the Mach-Zehnder modulator. In one embodiment, the reduction of the crosstalk is obtained by connecting the Mach-Zehnder modulator to one arm of the Y-branch attenuator. The invention also comprises a transmitting module including the integrated device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.